operational relay

 
  • 操作继电器

operational relay的用法和样例:

例句

  1. I need to buy car relay ,please and contact us.
    我们需要求购汽车继电器,请联系我们。
  2. Only one relay is closed at any time.
    在某一时间,仅有一个继电器是闭合的。
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